Flash has two auto settings as well as full power manual, takes two AA batteries. Olympus Flashes.
Olympus T20 Shoe Mount Flash For Olympus OM-1, OM-2, OM10, OM-4 OM Series
Olympus T20 Shoe Mount Dedicated Flash for OM10, OM20, OM30, OM40, OM1N, OM2N
Olympus T20 Shoe Mount Flash in nice working condition
Olympus T20 Shoe Mount Flash for OM 35mm SLR cameras & Case. Tested
Olympus T20 Shoe Mount Flash With Case
Olympus T20 Shoe Mount Flash
